Have you heard of that thing where if a cis man is on his knees with his hands behind his back and bends forward, it’s really hard or impossible for him to get back up on his own? Like some sort of physics/body mechanics thing. AFAB people have a lower center of gravity so they can hold themselves up...anyways, we thought it would be fun to test that out and add in some ass eating and breath play at the same time. So I tied his hands behind his back, then positioned myself in front of him so he would be stuck, with his face buried in my ass and no way to get out.